Barns, Coops and Saunas: What to Ask a Foundation Contractor Before You Break Ground on a Homestead

Before you break ground, ask any foundation contractor four things: what the building will weigh, what the ground is like, where the water will go, and how the crew will get equipment to the spot. The answers tell you which foundation you need and whether the contractor has really looked at your land.

Homestead buildings are a mixed bunch. A chicken coop, a hay barn, a wood-fired sauna and a workshop garage can all sit on one property, yet they put very different demands on the ground beneath them. A good conversation up front saves you from a sinking corner or a flooded floor later.

What is the building, and what will it carry?

The foundation has to match the load, so tell the contractor exactly what will live inside. A coop with a few birds is light. A barn with stalls, feed and a tractor is heavy. A sauna adds heat and moisture, and a garage adds vehicles.

Homesteaders who call concrete foundation contractors should come prepared with dimensions, a rough plan for how the building will be used and a sketch of where it will sit. With those in hand, a contractor can say whether you need a slab, footings, piers or a gravel pad.

Which foundation fits which building?

Light buildings can sit on a gravel pad or piers, while heavy buildings and anything that holds vehicles usually call for concrete. The contractor should explain the choice in plain terms and tell you what the alternative would be.

• A gravel pad suits small coops, sheds and light outbuildings that may move someday.
• Piers or blocks suit raised floors and uneven ground, which often describes a sauna or small cabin.
• Concrete footings with stem walls carry heavier buildings and handle freezing ground well when they are set below the frost line.
• A concrete slab gives barns, workshops and garages a flat, durable floor.

What does the ground look like?

Soil, slope and water decide how a foundation behaves, so ask the contractor to walk the site before giving an estimate. Clay holds water and swells. Sandy soil drains but can settle. A wet corner near a spring or a downhill runoff path will matter more than anything else on the plan.

Ask about frost depth too. In the eastern states the ground freezes to a depth that varies by county, and footings usually need to reach below it. Your local building office can tell you the number. If animals will live in the building, also ask how the floor will be sloped and finished so it drains and cleans easily.

Planning a concrete garage

A concrete garage needs a slab that is flat, reinforced and sloped toward the door so water leaves. Ask how thick the slab will be, what sits under it and how the edges will be thickened to carry the walls.

A concrete garage foundation also depends on the base beneath it. Compacted stone under the slab helps prevent uneven settling, and control joints guide where the concrete will crack as it cures. Ask the contractor to show you where those joints will go.

Questions worth asking before you sign

Specific answers are a good sign, and vague ones are a warning. Take this list to every contractor you talk to:

• Which soil and drainage conditions they saw on your site, and how the plan responds to them.
• How deep the footings will go and what that depth is based on.
• What base goes under the concrete and how it will be compacted.
• How equipment will reach the building spot without tearing up the pasture or driveway.
• What happens to the ground around the foundation when the work is finished.
• Who handles permits and inspections if your county requires them.
• How long the work will take and what could change that.

Getting started

Gather your dimensions, take a few photos of the site and write down what the building will hold. Site Prep brings more than 25 years of concrete work to foundation projects and offers free estimates. Getting two or three estimates lets you compare how each contractor reads the same piece of land.